Service difficulty report · Skin · Boeing 747422

Difficulty date
November 15, 2010
Submitted
November 24, 2010
Operation
Air carrier
Aircraft
N178UA
Make and model
Boeing 747422
Aircraft serial
24385
Aircraft time
84,591 hours, 10,299 cycles
Engine
Pwa PW4056
System (JASC)
5755 · Spoilers
Part
Skin
Condition
Damaged
Location
Nr 4 Spoiler
Stage of operation
NR
How discovered
O
Nature of condition
C
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

THE LEFT WING NR 4 FLT SPOILER UPPER SURFACE HAS SUSTAINED HAIL DAMAGE. THERE ARE A TOTAL OF 81 HITS WITH AN AVERAGE DEPTH OF .018, 1 INCH IN DIAMETER AND NO PENETRATION. REPAIRED ON DOCK WU B8479W.